CNT32-8M(PCI)

Overview / Features

This product is a PCI bus-compliant interface board that counts input pulse signals from external devices. This product has eight channels of 32-bit up/down counters, allowing external devices such as a rotary encoder and a linear scale to be connected. Given below are examples of using the board for “detecting a position of the table of a machine tool” and “detecting a change in weight”. The pulse signal incoming interface is differential line receiver input or TTL level -compatible input that can receive pulse signals at high speed. Windows/Linux device driver is supported with this product.

• 8ch 32-bit up/down counter, high speed pulse input of 10MHz, and disconnection detection are available.
  • A 32-bit up/down counter with 8 channels is mounted on one board, high speed pulse input up to 10MHz (unisolated TTL-level input, differential line receiver) is available, and disconnection detection can be performed for differential line receiver input. 2-phase signals and 1-phase signals such as a rotary encoder or linear scale can be counted. Surge protection is realized by implementing protectors in the input circuit. In addition, 1pin/ch of control input signal is provided. It can be used as counter start/stop, preset, zero clear, general-purpose input.
• Bus master transfer function is provided.
  • Bus master transfer makes it possible to transfer large data at a high speed without extra CPU load.
• Digital filter function to prevent wrong recognition of input signals due to noises is provided.
  • Digital filter function by which noises of counter input signals (phase-A, phase-B, phase-Z) and control input signals can be prevented is equipped. Digital filter can either be not used or set within the range of 0.1μ – 1.6384msec by software. In addition, as all these input signals are taken into the internal counter via the digital filter, when using the digital filter, these signals are taken in with a delay of a specified duration.
• Windows/Linux support device driver
  • Using the device driver API-TOOL makes it possible to create applications of Windows/Linux. In addition, a diagnostic program by which the operations of hardware can be checked is provided.
• The synchronization control connectors are provided
  • The synchronization control connectors which can make boards up to 16 pieces synchronously run are provided. In addition, the synchronous operation with CONTEC boards where a synchronization control connector is mounted can be easily realized.
• Independent general-purpose timer is provided
  • The timer which can let interrupts occur at a specified interval is provided. The timer can be set within the range of 1 – 6553msec (selectable in step of 1 msec).